The present invention provides a display panel, a manufacturing method thereof, and a display module. The display panel includes a light emitting device. The light emitting device includes an anode electrode layer, a cathode electrode layer, and at least two light emitting layers, and at least one auxiliary electrode layer. The at least two light emitting layers are disposed between the anode electrode layer and the cathode electrode layer. Each auxiliary electrode layer is disposed between two adjacent light emitting layers. The at least one auxiliary electrode layer, the anode electrode layer, and the cathode electrode layer are separated from each other. The light emitting layers are separated from each other.